Ball check-valve.



G. GRAHAM.

BALL CHECK VALVE.

APPLICATION FILED AUG.23. 1915.

1,1 58,483. v Patented Nov. 2, 1915.

'second, to furnish ball check relative to a seat by GEORGE GRAHAM, F DETROIT, MICHIGAN BALL CHECK-VALVE.

Application filed August 23, 1915. I Serial No. 46,554.

To all whom it may con wa n:

lie it known that i, GEORGE (Iranian, a citizen of the United-States of America, residing at Detroit. inthe county of \Vavne and State of Michigan, have invented certain new and useful In'iprovements in Bali Check-Yalves. of which the following is a specification, reference being liad therein to the accompanying drawings.

'lhisinvention relates to ball check valves.

The objects of my invention are, first, to provide a self contained ball check valve of simple. construction that is sensitive to pressure fluctuations at the ends of the valve; valves with a novel cage free to rise and fall and guided a detachable bonnet; third, to provide a self adjusting ball check valve thatat all times insures a non-lealoible connection when the valve is closed, and fourth, to provide a check valve consisting of comparatively few parts that are inexpensive to manufacture, durable, easy to assemble and highly etticient for the purposes for which they ar intended.

The above and other objects are attained by a mechanical construction that will be hereinafterspecifically described and then claimed, and reference will now be had to the drawing, wherein there is illustrated a longitudinal sectional view of a. self containcd ball check valve in accordance with this invention.

The valve coiuprises a conventional bodv 1 having a dividing partition 2 provided with an opening establishing communication between the ends of the body. The material bordering upon the opening 3 provides a valve seat land in the. saine'axis-hs the opening 3 is a connection 5 for a stepped bonnet it, which is screwed or otherwi e mounted in the connection The bonnet 3 has clearance recesses or compartments 7 and 8 and a tubular guide 9. all of whi h are concentric of the bonnet.

I)etachably mounted in the bonnet 6 and free to rise and fall therein is a cage, com prising an annular wall or shell 10 provided with radially disposed openings ll. The lower end of the shell '10 has the edges thereof reamed, upset, inbent or otherwise shaped, as'at 12 to support a valvular member 13 in the form of a spherical body or ball. The valvular member 13 is free to re- Specificatien of Letters Patent.

Patented Nov. 2, i915.

volve within the shell 10 and protrudes from the shell to engage the seat 4 and positively close the opening 23 of the partition The upper end of the shell 10 is interiorly screwthreaded to receive a cap 14, which has a nut 13 and a post 143, The post 16 is slidably mounted in the tubular guide 9 of the bonnet and the recesses or compartments 7 and 8 of the bonnet provide clearance for the cap H- and the nut respectively. The bottom side of the cap 14 has a. conical recess 17 into which the valvular n'ien'iber 13 err-- tends. The cap 14 limits the upward movement of the valvularmember 13 within the cage, but permits said valvular. member to freely revolve, whereby said member will present a fresh seating surface to the seat =1, thereby avoiding wear at any particular point upon the valvular member.

It through the medium of the detachable cap l-l that the valvular member 13 is placed inthc cage. and with the openings 11 above the point of contact between the cage and the member 13. liuid can readily'entez' said opening to seat the valvular member 1- when there is'a. back pressure of fluid or a reduction in the pressure.

l attach considerable importan e to the simpli ity of constru tion. particularly the few parts composing the val\ e. as easy access is bad to each and every part. and in the manufa ture of the valve the parts can be expeditiously ms: mbled.

()no embodiment ol l!i been illustrated but it is to be understood that the str ctural iciucut are suswptible to llHllllli 'Jlll'i-Jfi without departing from the scope oi the appended claim.

\l'hat l laim is1-- lu a sell contained ball heck valve. the combination with a valve body having a dividing partition providing an opening and a seat. of a bonnet deta lia litv connected to said valve bod and pro\ illlltlj clearance reesses and a tubular guide in the vertical axis oi the opening of said dividing partitions, a cage tree to riscand fall in said bonnet, and mprising an amiular shell having the lower end the-root wanted. a valvular member supported in -aid shell bv the reamed end thereof. and adapted to engage the seat of said div idiue' pariiiiou. said shell having openings therein above the point of contact between said shell and said valvular inv ntion has;

member,

a cap detachably. mounted in the.

said shell, a nut forming part of the top of 5 said cap, and a post; carried by said nut and extendili bdnnet.

g into the tubular guide of 'said In testimony whereof I affix niy signature in presence of two witnesses.

l Witnesses LEWIS E. FLANDERS, ANNA M Donn.

(31201191 3 GRAHAM. 

